| (19) |
 |
|
(11) |
EP 0 448 158 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
08.07.1992 Bulletin 1992/28 |
| (43) |
Date of publication A2: |
|
25.09.1991 Bulletin 1991/39 |
| (22) |
Date of filing: 12.03.1991 |
|
|
| (84) |
Designated Contracting States: |
|
BE CH DE ES FR GB IT LI NL SE |
| (30) |
Priority: |
19.03.1990 US 495060
|
| (71) |
Applicant: SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V. |
|
NL-2596 HR Den Haag (NL) |
|
| (72) |
Inventor: |
|
- Modic, Michael John
Richmond,
Texas 77469 (US)
|
|
| |
|
| (54) |
Process to blend polyamides and functionalized elastomers and blends prepared by this
method |
(57) The present invention provides a process to produce toughened nylon compositions
by blending a masterbatch comprising from 15 to 120 parts by weight of an α-polyamide
with 100 parts by weight of a functionalized hydrogenated conjugated diolefin polymer
and then blending the masterbatch with a sufficient amount of α-polyamide to result
in a total of from 200 to 2000 parts by weight of α-polyamide in the resultant composition
to form a toughened nylon composition. The toughened nylon composition has a 3.2 mm
(1/8 inch) notched Izod impact toughness of greater than 534 J/m (10 ft-lb/in) at
-29 °C (-20 °F) when 20 parts by weight of the functionalized hydrogenated polyisoprene
is blended according to this invention with a total of 80 parts by weight of nylon
6.